The Pearl Index, also called the Pearl rate, is the most common technique used in clinical trials for reporting the effectiveness of a birth control method.
Read more about Pearl Index: Calculation and Usage, History, Criticisms
Famous quotes containing the words pearl and/or index:
“Major Bagley: So they really got the Arizona.
Captain Quincannon: Yes, sir. Hickham Field was hit just as bad as Pearl Harbor, lot of fifth column work.
Major Bagley: I’ve studied all the wars in history, gentlemen, and I’ve never come across any dirty treachery like that.”
—Dudley Nichols (1895–1960)
“Exile as a mode of genius no longer exists; in place of Joyce we have the fragments of work appearing in Index on Censorship.”
—Nadine Gordimer (b. 1923)